Input Circuit Floating; protect the instrument from tilting and possible vibration or shock Lead Standard 12 leads, manual /auto Patient Current Leakage <10μA Input Impedance ≥10ΜΩ Calibrating Voltage 1mV±3% A/D Conversion 12 bits Frequency Response 0.05Hz~150Hz (IEC) Time Constant >3.2seconds CMRR >80d >100dB (with filter) EMG Filter 35Hz (-3dB) / 25Hz (-3dB) Sensitivity 1/2, 1, 2 (cm/mV), exchange tolerance≤±5% Recording System Thermal-array printing system 8 dots/mm (vertical) 16 dots/mm (horizontal, 25mm/sec) Paper Speed 25, 50mm/s±3 % Recording Paper 50mm, 20m, high-speeding thermal printing paper Input Circuit Current ≤50μA Safety Standard IEC class I, type CF Power Supply AC: 220V / 110V, 50/60Hz DC 12V rechargeable battery Skin Voltage Tolerance ±300mV Noise Level <15μVp-p Dimensions 400mm x 280mm x 160mm Net Weight 2.75kgs Gross Weight 4.50kgs